cudf::detail::pair_rep_accessor< T, has_nulls > Struct Template Reference

pair accessor of column with/without null bitmask More...

Public Types
using	rep_type = device_storage_type_t< T >
	representation type

Public Member Functions
	pair_rep_accessor (column_device_view const &_col)
	constructor More...
thrust::pair< rep_type, bool >	operator() (cudf::size_type i) const
	Pair accessor. More...

Public Attributes
column_device_view const	col
	column view of column in device

Detailed Description

template<typename T, bool has_nulls = false>
struct cudf::detail::pair_rep_accessor< T, has_nulls >

pair accessor of column with/without null bitmask

A unary functor returns pair with representative scalar value at id and boolean validity operator() (cudf::size_type id) computes element and returns a pair(element, validity)

the return value for element i will return pair(column[i], validity) validity is true if has_nulls=false. validity is validity of the element at i if has_nulls=true and the column is nullable.

Exceptions

cudf::logic_error	if has_nulls==true and the column is not nullable.
cudf::logic_error	if column datatype and template T type mismatch.

Template Parameters

T	The type of elements in the column
has_nulls	boolean indicating to treat the column is nullable

Definition at line 952 of file column_device_view.cuh.

Constructor & Destructor Documentation

pair_rep_accessor()

template<typename T , bool has_nulls = false>

cudf::detail::pair_rep_accessor< T, has_nulls >::pair_rep_accessor ( column_device_view const &  _col )

inline

constructor

Parameters

[in]

_col

column device view of cudf column

Definition at line 962 of file column_device_view.cuh.

Member Function Documentation

operator()()

template<typename T , bool has_nulls = false>

thrust::pair<rep_type, bool> cudf::detail::pair_rep_accessor< T, has_nulls >::operator() ( cudf::size_type  i ) const

inline

Pair accessor.

Parameters

[in]

i

index of element to access

Returns

pair of element and validity

Definition at line 974 of file column_device_view.cuh.

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The documentation for this struct was generated from the following file:

• column_device_view.cuh